What is the horsepower capability of this rotating assembly?

With the standard ARP 8740 cap screws, this assembly is rated for up to 750 horsepower. If you opt for the upgrade to ARP 2000 cap screws, the capability increases to 1,500 horsepower.

What materials are the main components made from?

The crankshaft and connecting rods are constructed from durable 4340 forged steel. The pistons are made from strong 2618 forged aluminum, and they include Premium Chrome Moly wrist pins.

Specifications

Brand: Manley Performance
Part #: 290200R
UPC: 807298068749

Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH

Name: Manley Rotating Assembly, SBC 434 4.000 STROKE/-20cc DISH
Brand: Manley Performance
SKU: manley-performance-manley-rotating-assembly-sbc-434-4-000-stroke-20cc-dish-t14-881122
Price: 3534.64 USD
Availability: BackOrder

$3534.64

On Backorder

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Manley Rotating Assembly, SBC 434 4.000" STROKE/-20cc DISH. A well-built rotating assembly for serious engine builds.

Key Features

Fits Small Block Chevy (SBC) engines.
Creates a 434 cubic inch displacement with a 4.000 inch stroke.
Includes a lightweight 4340 forged steel crankshaft.
Features 4340 forged steel H-beam connecting rods with 7/16? ARP 8740 cap screws.
Comes with 2618 forged aluminum Platinum Series pistons and Premium Chrome Moly wrist pins.
Supports horsepower ranges from 750 HP (with ARP 8740) to 1,500 HP (with optional ARP 2000 cap screws).

This rotating assembly is designed for Small Block Chevy (SBC) engines. Check manufacturer specifications to confirm compatibility with your specific engine block and build requirements.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

This Manley Performance rotating assembly is built for a Small Block Chevy (SBC) engine, creating a 434 cubic inch displacement with a 4.000 inch stroke. It's a complete package designed to be the heart of a high-performance engine build, whether you're looking to upgrade your existing SBC or starting a new project. The components are selected for strength and reliability under demanding conditions.

At its core is a lightweight 4340 forged steel crankshaft, chosen for its durability and ability to handle significant stress. Paired with this are 4340 forged steel H-beam connecting rods, known for their robust construction. These rods come standard with 7/16? ARP 8740 cap screws, a popular choice for strength, with an option to upgrade to ARP 2000 cap screws for even greater load-carrying capacity. The assembly includes 2618 forged aluminum Platinum Series pistons, which are lightweight and strong, featuring Premium Chrome Moly wrist pins for added durability. This combination is engineered to support horsepower ranges from 750 with the standard ARP 8740 fasteners up to 1,500 horsepower when using the optional ARP 2000 cap screws.

This rotating assembly is a solid option for builders aiming for significant power gains. Please note that this assembly is not CARB approved and cannot be shipped to California. It's important to consult with your engine builder to ensure this assembly meets your specific project goals and local emissions requirements.